Camp, W. H.; Rickett, H. W.; Weatherby, C. A. (1947). "International rules of botanical nomenclature, Appendix III: Nomina Generica Conservanda". Brittonia. 6 (1): 1–120 (Section 10, page 47). doi:10.2307/2804665. JSTOR2804665.
Camp, W. H.; Rickett, H. W.; Weatherby, C. A. (1947). "International rules of botanical nomenclature, Appendix III: Nomina Generica Conservanda". Brittonia. 6 (1): 1–120 (Section 10, page 47). doi:10.2307/2804665. JSTOR2804665.